How to learn MAC address of a device conneceted to a port of switch

[tkiziloren]

Hi. Is there any way of learning the MAC address of a device connected to a managed switch? How can i prevent the connection of hubs to ports of any switch. I know cisco provides some security improvements in order to solve this problem(such as specifying max number of connecting devices). However, I am looking for a solution which is applicable for all kind of switches.

Thanks in advance..

Tevfik K?z?lören.

 

[kcbell]

You are in a wrong forum for your question.

Depending on the type switch, the way to find the mac is not the same.
sh mac-address-table inter f0/1
will give you all the devices connected to f0/1 interface.

You may use "port security" to restrict the number of mac connected to the port. If more than the allowed then depending on your configuration; the port may be disabled or the ignored.

As far as I know there is no software out there that manage this feature. I wrote my own Perl program to enable/disable/clear mac/increase mac side etc.

Hope this help!